Rotary brush



Maren 11, 1930. v J, sMlTH 1,750,062

- ROTARY BRUSH Filed July 25, 1927 glwuentoz waem Patented Mar. 11,1930

Jessa R. SMITH, or BENTON, ILLINOIS ROTARY BRUSH Application filed my 25,

The present invention relates to a rotary brush structure. More particularly the invention relates to a rotary hand operated brush structure adapted for use for cleaning fi operations in places to which access may be had only with difficulty, and which is especially adapted for use as a tooth brush.

A primary object of my invention is to provide a rotary tooth brush which will clean teeth and stimulate gums more thoroughly and in less time than can be done with the common form of tooth brush.

Another object of my invention is the provision of a rotary tooth brush which is more -sanitary and more easily cleaned than the common form of tooth brush.

A further object of my invention is the provision of a hand operated rotary cleaning brush structure which is simple rugged, and

eflicient and can be manufactured at relatively low cost.

Further objects of my invention are such as will appear in the following detailed description thereof and as are defined in the 3513 terms of the appended claims, it being understood that changes in the details of construction hereinafter set forth may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention. Referring to the accompanying drawi r the brush end of the brush structure.

As shown in the drawings,.reference character 10 designates a frame consisting of a rigid member 11 and a spring member 12, the

members 11 and 12 being bent upon themselves to provide handles or finger grips as 50 "indicated at 11 and 12 respectively.

1927. Serial in). 208,245.

The frame at the juncture of the members 11 and 12is provided with an aperture 13, and member 11 is provided with a lug 14 ad jacent its free end, the lug 14: being provided With an aperture 15,'said apertures 13 and 15' providing bearings for a" purpose hereinafter referred to. The numeral 16 designates a shaft which atone end is journaled in the bearing 15 and adjacent its opposite end is journaled in the bearing 13. The end of shaft16 which is ournaled in the beariiig 15 is reduced in diameter thus providing a shoulder 16 bymeans of whiclia key or similar means 16 thesh'aft is held against longitudinal movement. j

Shaft 16 adjacent thelug 14 has suit bly vsecured thereto apinion 17. Springme' her 12 adjacent the free end thereof is provided with alug 18 and in vertical aligiiment therewith the member 11 is provided with a slotted lug 19. Secured at one end to the lug 18 and gui ded slidably within the slot in lug 19 is a toothed rack 20 meshing with pinion 17. Shaft 16 adj acentaperture 13 is squared and provided with alongitudinalsplit or kerfas indicated at16. Numeral 21 designatesa brush of suitable form and size andis provided with a square aperture21 by means of whichthe bruslris detachably secured to the shaft by frictional engagement of the split squared end of the shaft and walls of the square aperture in the brush. I

A shield 22 made of suitablethin material is shaped to partially surround the brushto protect the cheek and gums whenusing the brush. The shield 22 as shown is substantially semi-cylindrical in form, open atthe front end and closed at the rear end which closed end is provided with an aperture 22 Rigidly secured within the aperture is an end'of a tubular supporting and limiting member 24:, the opposite end of which extends through aperture 13 of the frame member as indicated at 249. I I

The supporting and'limiting member connects the shield 22 with the frame member 1 member and further provides a bearing for the end of shaft 16, as is clearly indicated in Fi ure 5.

nterposed between the closed end of the shield and the frame member is a disk spring member 26 which is centrally apertured to receive the member 24 andfrictionally enges the opposing faces of the frame memdr and closed end of the shield to hold the shield in any adjusted position.

The member 24 allows the closed end of the shield to approach the frame member against the action of the spring member 25.

In using the brush the handles 11 and 12 are grasped preferably with adjacent fingers and member 12 is pushed toward member 11 which will cause the rack to move toward member 11 and the teeth thereof engaging the teeth of the pinion 17 will cause the pinion to rotate. Pinion 17 will rotate shaft 16 which in turn will impart rotation to the brush 21.

When member 12 has been pushed down adjacent the member 11 pressure thereon is relieved and the spring member 12 will immediately move outward thus imparting rotation to the brush in the opposite direction. It will accordingly be seen that by pressing member 12 downward and. releasing it in quick succession the brush will be caused to rotate rapidly and alternately in opposite directions corresponding to the movement of the member 12.

B rotatably mounting the shield on the she the shield can be turned about the axis of the shaft to expose different portions of the brush and thus adapt it to any particular place desired to have cleaned, while the shield will protect the cheeks against the action of the brush. After using the brush it can be quickl and thoroughly cleaned by immersingthe rush in clean water and rotating it rapidly.

It will be seen that a brush and operating structure therefore is provided which will quickly and thoroughly clean a surface which is sanitary in that it can be quickly and thoroughly cleaned, and in which a new brush can be conveniently substituted when necessary due to the removability of the brush.

Having described a preferred embodiment of m invention, what is desired to .be secur by Letters Patent and is claimed as new is:

1. A. rotary tooth brush comprising a frame member having an aperture therein, a shield having an aperture therein, a tubular supportin and limiting member adapted to receive a s aft, said supporting and limiting member belng rigidly secured within one of said a rtures and loosely extending through the ot er aperture, said supporting and limitmg member rovided with means to revent separation 0 said frame member an shield, 

